石超男,张战辉,唐贵良,薛亚东

• 1:河南农业大学农学院

摘要(Abstract)：

利用一套来源于玉米杂交种农大108的RIL群体及其IF_2群体,对玉米开花期相关性状进行比较QTL分析。表型分析结果表明,杂交种农大108和IF_2群体具明显的杂种优势,其玉米开花期相关性状在不同环境间较双亲和RIL群体更加稳定。通过QTL分析,RIL群体中定位到17个开花期相关的QTLs,IF_2群体中定位到15个QTLs,主要分布在染色体区域bin 1.02~1.03,bin 4.00~4.01,bin 4.07~4.08,bin 9.04和bin 10.03。但仅q DS1在2个群体中同时被检测到,表明玉米杂交种和自交系具有截然不同的开花期遗传调控机制。本研究检测到的环境间、性状间保守QTLs可能含有调控玉米开花期的主效基因,在育种过程中可用于筛选开花期适合的优良自交系,并指导适于玉米机械化收获优良品种的选育。

关键词(KeyWords)： 玉米;IF2群体;RIL;开花期;QTL分析

Abstract:

Keywords:

基金项目(Foundation): 小麦玉米作物学国家重点实验室开放课题(39990002)

作者(Author): 石超男,张战辉,唐贵良,薛亚东

DOI: 10.16445/j.cnki.1000-2340.2016.02.001

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